Journal of Applied Polymer Science, Vol.113, No.5, 3264-3268, 2009
The Role of Auxiliary Monomers and Emulsifiers on Wet Scrub Resistance of Various Latex Paints at Different Pigment Volume Concentrations
This work is an attempt to Study the effect of different latex types containing various auxiliary monomers and emulsifiers on their pigmentation and their cor responding behavior on scrub resistance. The auxiliary monomers investigated were acrylic acid (AA), methacrylic acid (MAA), and itaconic acid and the emulsifiers contained sodium lauryl sulfate (SLS) and sodium dodecylbenzene sulfonate (SDBS). It was shown that a semi-batch polymerization technique which led to smaller particles and sharper size distributions is preferable. The best wet scrub results were obtained by using MAA and SLS. It was also shown that the proper selection of an auxiliary monomer generally depended on the range of incorporated pigment volume concentration (PVC). At high PVCs, AA gave better performances compared with MMA. The reverse effect was shown to occur at low PVCs. (C) 2009 Wiley Periodicals, Inc. J Appl Polym Sci 113: 3264-3268,2009
Keywords:wet scrub resistance;pigment binding capacity;washability;auxiliary monomer;emulsifier;pigment volume concentration